APA استشهاد

Copson, E. T. (1976). Partial differential equations. S.Chand & Co..

استشهاد بنمط شيكاغو

Copson, E. T. Partial Differential Equations. New Delhi: S.Chand & Co., 1976.

MLA استشهاد

Copson, E. T. Partial Differential Equations. S.Chand & Co., 1976.